Canon EOS-1D X Mark III Advanced User's Manual page 479

4.
Save the image.
When using [Set up processing→JPEG] or [Set up processing→
HEIF], select [
Read the message and select [OK].
To process other images, select [Yes] and repeat steps 2–4.
5.
Select the image to display.
Select [Original image] or [Processed img.].
] (Save).
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